Description
The channel driver in Asterisk before 1.2.17 and 1.4.x before 1.4.2 allows remote attackers to cause a denial of service (crash) via a SIP INVITE message with an SDP containing one valid and one invalid IP address.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | asterisk | 1:1.4.2~dfsg-5 | — |
| Debian 4.0 | asterisk | 1:1.2.13~dfsg-2etch1 | DSA-1358-1 |
| Debian 3.1 | asterisk | 1:1.0.7.dfsg.1-2sarge5 | DSA-1358-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Asterisk 1.2.16/1.4.1 - SIP INVITE Remote Denial of Service EDB-3566 · dos · Mar 25, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-1358-1 asterisk Debian Security (DSA / DLA) · Mar 9, 2026
References
- 1017794 vdb-entry
- 20070319 Asterisk SDP DOS vulnerability mailing-list
- 24564 third-party-advisory
- http://asterisk.org/node/48339
- SUSE-SA:2007:034 vendor-advisory
- 20070321 Two new DoS Vulnerabilities in Asterisk Fixed mailing-list
- 23031 vdb-entry
- asterisk-sip-invite-dos(33068) vdb-entry
- GLSA-200704-01 vendor-advisory
- 25582 third-party-advisory
- 24719 third-party-advisory
- http://www.sineapps.com/news.php?rssid=1707
- ADV-2007-1039 vdb-entry
- DSA-1358 vendor-advisory
- 34479 vdb-entry
- [VOIPSEC] 20070319 Asterisk SDP DOS vulnerability mailing-list